Dipstick test device including a removable filter assembly
First Claim
1. A dipstick test device for detecting an analyte in a liquid sample by treating the analyte with at least one liquid reagent to form a detectable reaction product, said dipstick of said test device comprising:
- a) means defining an aqueous permeable, aqueous insoluble reaction zone, positioned at one end of an elongated dipstick and adapted to retain said detectable reaction product;
b) a control absorbent in liquid-transferring relation with the means defining the reaction zone, said control absorbent having a predetermined, limited liquid-absorbing capacity, said dipstick being sized and configured for insertion into a vessel containing said sample, whereby said control absorbent fills to capacity with sample and said means defining a reaction zone incubates with said sample;
c) a re-movable filter assembly positioned at said end of said dipstick; and
d) a reaction tray comprising a well adapted to receive said filter assembly on said dipstick and to retain said filter assembly as said dipstick is removed.
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Accused Products
Abstract
Disclosed is a dipstick test device for detecting an analyte in a liquid sample by treating the analyte with at least one liquid reagent to form a detectable reaction product. The device includes: a) an aqueous impermeable, aqueous insoluble reaction zone, adapted to retain the detectable reaction product; and b) a control absorbent above, and in liquid-transferring relation with, the reaction zone. The control absorbent has a predetermined, limited liquid-absorbing capacity, and the dipstick is sized and configured for insertion into a vessel containing the sample, with the control absorbent oriented above the reaction zone, so that the control absorbent fills to capacity with sample and the reaction zone incubates with the sample. The device may further include an absorbent reservoir which can be moved into liquid transferring contact with the reaction zone.
107 Citations
19 Claims
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1. A dipstick test device for detecting an analyte in a liquid sample by treating the analyte with at least one liquid reagent to form a detectable reaction product, said dipstick of said test device comprising:
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a) means defining an aqueous permeable, aqueous insoluble reaction zone, positioned at one end of an elongated dipstick and adapted to retain said detectable reaction product; b) a control absorbent in liquid-transferring relation with the means defining the reaction zone, said control absorbent having a predetermined, limited liquid-absorbing capacity, said dipstick being sized and configured for insertion into a vessel containing said sample, whereby said control absorbent fills to capacity with sample and said means defining a reaction zone incubates with said sample; c) a re-movable filter assembly positioned at said end of said dipstick; and d) a reaction tray comprising a well adapted to receive said filter assembly on said dipstick and to retain said filter assembly as said dipstick is removed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification